| COLOR | BLACK FASTENER |
| FASTENER LENGTH | 0.500 INCHES NOMINAL |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM FASTENER |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | HEXAGON |
| LOCKING FEATURE | PATCH OR PELLET OR STRIP THREADS |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED 66 300SERIES FED STD ALL MATERIAL RESPONSES FASTENER |
| MATERIAL | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| MATERIAL | STEEL CORROSION RESISTING FASTENER |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| POINT STYLE | HALF DOG |
| WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER |
| SURFACE TREATMENT | OXIDE FASTENER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 16 |